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G. B. WEBB. CIRCUIT BREAKER FOR ELEOTRIG OLOGKS. NO. 289,944. Patented D60. 11, 1883.

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GEORGE B. WEBB, OF NEWARK, NEXV JERSEY, ASSIGNOR OF ONE-HALF TO PLUMB 8: MARCUS, OF SAME PLACE.

CIRCUIT-BREAKER FOR ELECTPJC CLQCKS.

SPECIFICATION forming part of Letters Patent No. 289,944,

Application filed May .39, 1853.

To all wit/m2, it may concern.

Be it known that I, GEORGE B. WEBB, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Circuit-Breakers for Electric Clocks, &c.; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable oth- IO ers skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of this invention is to break or to close an electric or galvanic circuit with greater precision than by the devices now in use, its application being more especially to the seconds-arbor of an electric clock, in which the time is transmitted from a central timepiece to any given number of indicators or dials.

Referring to the accompanying drawings, in which similar letters of reference indicate like parts in each of the several figures, Figure 1 is a side elevation, and Fig. 2 a plan illustrating the nature of my device. Figs. 3, i, 5, and 6 are respectively plans and side views of certain parts thereof, which will be hereinafter 0 more particularly described.

In said drawings, a represents a secondsarbor of a clock carrying a pointer or hand, b. Upon said arbor is arranged a snail-wheel, c, with which engage spring-arms (l d, one of 3 5 which is slightly longer than the other. Said spring-arms carry contact-points e e, and are secured on a suitable bed-plate, g, by screws h or other devices. Said bed-p1ate is aflixed to the clock-plate in an appropriate position. 0 To the spring-arms are connected suitable condated December 11, 1283.

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ducting wires, 2 and said arms are properly insulated, as at f, by appropriate insulating material.

In Fig. l is shown the circuit-breaker as it stands at sixty seconds, the shorter of the two arms having fallen from projection on the snailwheel or cam on the seconds-arbor, bringing the contact-points together with a sudden blow, the force that has gradually accumulated in the spring, with but a feeble exertion on the part of the seconds-arbor or its motor, being expended in one strong contact, as will be understood. At the next second the movement of the snail-wheel or its equivalent device al lows the other arm to fall, when the contact is again broken and continues so while the wheel makes another revolution.

Having thus described my invention, what I claim as new is 1. A circuit-breaker having therein two arms carrying contact points, the contac thereof being made by the dropping of one (if said arms, and a separation by the subsequent dropping of the other.

2. In combination, the snail-wheel working 6 5 on the arbor a, and springarms d d, engaging therewith and carrying contact-points, said spring-arms being separated by suitable insulating material, f, and connected with suitable conductingwires, said parts being arranged and operating substantially as and for the p urposes set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 22d day of May, 1883.

GEORGE B. IVEBB.

\Vitnesses:

CHARLES H. PELL, F. F. CAMPBELL. 

